<!DOCTYPE HTML>
<meta charset=UTF-8>
<title>CSS Test: default display of details and summary elements</title>
<link rel="help" href="https://html.spec.whatwg.org/multipage/rendering.html#the-details-and-summary-elements">
<link rel="help" href="https://github.com/whatwg/html/pull/10265">
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>

<details id="a">
  <summary id="b">This is the real summary.</summary>

  <p>This is the rest of the details.</p>
  <summary id="c">This summary is not special.</summary>
</details>

<summary id="d">This summary is not special.</summary>

<script>

  test(() => {
    assert_equals(getComputedStyle(document.getElementById("a")).display, "block");
  }, "default display of details element is block");
  test(() => {
    assert_equals(getComputedStyle(document.getElementById("b")).display, "list-item");
  }, "default display of first summary child of details is list-item");
  test(() => {
    assert_equals(getComputedStyle(document.getElementById("c")).display, "block");
  }, "default display of other summary element in details is block");
  test(() => {
    assert_equals(getComputedStyle(document.getElementById("d")).display, "block");
  }, "default display of summary element outside details is block");

  let new_styles = `
    details { display: grid }
    summary { display: flex }
  `;
  let new_style_element = document.createElement("style");
  new_style_element.append(document.createTextNode(new_styles));
  document.head.append(new_style_element);

  test(() => {
    assert_equals(getComputedStyle(document.getElementById("a")).display, "grid");
  }, "display of details element can be changed");
  test(() => {
    assert_equals(getComputedStyle(document.getElementById("b")).display, "flex");
  }, "display of first summary child of details can be changed");
  test(() => {
    assert_equals(getComputedStyle(document.getElementById("c")).display, "flex");
  }, "display of other summary element in details can be changed");
  test(() => {
    assert_equals(getComputedStyle(document.getElementById("d")).display, "flex");
  }, "display of summary element outside details can be changed");


</script>
